CLAIM OF PRIORITY
BACKGROUND
[0002] Aspects of the present disclosure relate generally to wireless communication networks,
and more particularly, to prioritizing data packets when stateful compression is enabled
in a wireless communication system.
[0003] Wireless communication networks are widely deployed to provide various types of communication
content such as voice, video, packet data, messaging, broadcast, and so on. These
systems may be multiple-access systems capable of supporting communication with multiple
users by sharing the available system resources (e.g., time, frequency, and power).
Examples of such multiple-access systems include code-division multiple access (CDMA)
systems, time-division multiple access (TDMA) systems, frequency-division multiple
access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems,
and single-carrier frequency division multiple access (SC-FDMA) systems.
[0004] These multiple access technologies have been adopted in various telecommunication
standards to provide a common protocol that enables different wireless devices to
communicate on a municipal, national, regional, and even global level. For example,
a fifth generation (5G) wireless communications technology (which can be referred
to as new radio (NR)) is envisaged to expand and support diverse usage scenarios and
applications with respect to current mobile network generations. In an aspect, 5G
communications technology can include: enhanced mobile broadband addressing human-centric
use cases for access to multimedia content, services and data; ultra-reliable-low
latency communications (URLLC) with certain specifications for latency and reliability;
and massive machine type communications, which can allow a very large number of connected
devices and transmission of a relatively low volume of non-delay-sensitive information.
As the demand for mobile broadband access continues to increase, however, further
improvements in NR communications technology and beyond may be desired.
[0005] In some instances, for a wireless communications technology, compressed data packets
are required to be transmitted in the order that they were compressed or else a compressor
of the transmitting device and a decompressor of the receiving device may become out-of-synchronization.
However, one or more of the data packets may need to be prioritized and delivered
out of the order compared to the order that the data packets were compressed. Thus,
improvements in wireless communication operations, such as, prioritizing data packets
when stateful compression is enabled, may be desired.
US 2008/080464 expands upon conventional ACK prioritization by transmitting ACKs with a lower block
error rate (BLER) (as opposed to data) over the air interface, providing a separate
radio bearer for ACKs and data, and successively increasing the priority of ACKs for
each retransmission required.
US 2012/057462 discloses systems and methods that provide bi-directional TCP throughput optimization
in point-to-multipoint and heterogeneous wireless access networks. The systems and
methods may provide a priority queue in wireless nodes (e.g., a user device, a wireless
base station, a wireless network device, etc.) of a wireless access network, may detect
TCP Ack packets in these wireless nodes, and may allocate the TCP Ack packets to the
priority queue (e.g., for earlier delivery than other packets).
US 7 319 667 provides a data compression system that dynamically adapts the degree of compression
used in response to the priority of the data to be compressed. In one embodiment,
only low priority data is compressed while high priority data is passed through to
the network in uncompressed form. Also, the compression ratio can be varied depending
on the priority of the data to allocate a larger portion of available bandwidth to
higher priority traffic while imposing greater compression related delay on lower
priority traffic.
SUMMARY
[0006] The scope of the invention is defined by the appended claims.
[0007] In accordance with the present invention, there is provided a method of wireless
communications as set out in claim 1, an apparatus of wireless communications as set
out in claim 11 and a computer-readable medium as set out in claim 12. Preferred embodiments
are covered by the appended dependent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The disclosed aspects will hereinafter be described in conjunction with the appended
drawings, provided to illustrate and not to limit the disclosed aspects, wherein like
designations denote like elements, and in which:
FIG. 1 is a schematic diagram of an example of a wireless communication network including
at least one base station having a call processing component and at least one user
equipment (UE) having a call processing component configured to prioritize data packets
when stateful compression is enabled;
FIG. 2 is a schematic diagram of an exemplary aspect of call processing in a wireless
communication system;
FIG. 3 is a conceptual diagram of a first example of prioritizing data packets when
stateful compression is enabled;
FIG. 4 is a conceptual diagram of a second example of prioritizing data packets when
stateful compression is enabled;
FIG. 5 is a conceptual diagram of a third example of prioritizing data packets when
stateful compression is enabled;
FIG. 6 is a conceptual diagram of a fourth example of prioritizing data packets when
stateful compression is enabled;
FIG. 7 is a flow diagram of a first example of a method prioritizing data packets
when stateful compression is enabled for wireless communications;
FIG. 8 is a flow diagram of a second example of a method prioritizing data packets
when stateful compression is enabled for wireless communications;
FIG. 9 is a flow diagram of a third example of a method prioritizing data packets
when stateful compression is enabled for wireless communications;
FIGs. 10A-10C are flow diagrams of a fourth example of a method prioritizing data
packets when stateful compression is enabled for wireless communications;
FIG. 11 is a schematic diagram of example components of the UE of FIG. 1; and
FIG. 12 is a schematic diagram of example components of the base station of FIG. 1.
DETAILED DESCRIPTION
[0009] Various aspects are now described with reference to the drawings. In the following
description, for purposes of explanation, numerous specific details are set forth
in order to provide a thorough understanding of one or more aspects. It may be evident,
however, that such aspect(s) may be practiced without these specific details. Additionally,
the term "component" as used herein may be one of the parts that make up a system,
may be hardware, firmware, and/or software stored on a computer-readable medium, and
may be divided into other components.
[0010] The present disclosure generally relates to prioritizing data packets when stateful
compression is enabled for wireless communications. For example, a receiver device,
such as a base station, and a transmitter device, such as a UE, may establish wireless
communications. In some instances, both the receiver device and the transmitter device
may enable stateful compression using a Robust Header Compression (ROHC) procedure
or an Uplink Data Compression (UDC) procedure in order to minimize the size of the
data packets. However, due to limitations in the previous compression procedures,
the plurality of data packets that are compressed need to be transmitted in the order
that they were compressed so that the receiver device's decompressor remains in synchronization
with the transmitter device's compressor. This is due to the limitations of the current
compression process in which the compressor memory of the compressor at the transmitter
device and the compressor memory of the decompressor at the receiver device may become
out-of-synchronization if compressed data packets are transmitted out of the order
in which they were compressed.
[0011] In an aspect, certain packets that are scheduled for transmission may need to be
prioritized so as to enhance both downlink and uplink performance. For example, the
transmitter device may desire to prioritize data packets corresponding to Transmission
Control Protocol (TCP) Acknowledgements (ACKs) over other data packets in the same
radio bearer and/or flow. By prioritizing certain packets, such as TCP ACKs, throughput
performance may increase since the receiver device may transmit data packets at a
faster rate in response to receiving the TCP ACKs sooner. As such, a need exists to
prioritize certain data packets that are to be compressed and scheduled for transmission
in an order different from the order in which they were compressed.
[0012] Accordingly, in some aspects, the present methods and apparatuses may provide an
efficient solution, as compared to conventional solutions, by prioritizing data packets
when stateful compression is enabled for wireless communications. As such, the present
methods and apparatus may include receiving a plurality of data packets scheduled
in a first order for transmission. The described aspects further include prioritizing
one or more data packets of the plurality of data packets as one or more prioritized
data packets, each prioritized data packet being scheduled in an order for transmission
different from the first order for transmission. The described aspects further include
compressing one or more unprioritized data packets of the plurality of data packets
into one or more compressed unprioritized data packets. The described aspects further
include scheduling the one or more prioritized data packets and the one or more compressed
unprioritized data packets in a second order for transmission, the second order differing
from the first order.
[0013] In another aspect, the present methods and apparatuses may include receiving a plurality
of data packets scheduled in a first order for transmission. The described aspects
further include prioritizing one or more data packets of the plurality of data packets
as one or more prioritized data packets, each prioritized data packet being scheduled
in an order for transmission different from the first order for transmission. The
described aspects further include aggregating the one or more prioritized data packets
into a first group of prioritized data packets and one or more unprioritized data
packets into a second group of unprioritized data packets. The described aspects further
include compressing the first group of prioritized data packets into a first group
of compressed prioritized data packets and the second group of unprioritized data
packets into a second group of compressed unprioritized data packets. The described
aspects further include scheduling the first group of compressed prioritized data
packets and the second group of compressed unprioritized data packets in a second
order for transmission, the second order differing from the first order.
[0014] In another aspect, the present methods and apparatuses may include receiving a plurality
of data packets scheduled in a first order for transmission. The described aspects
further include prioritizing one or more data packets of the plurality of data packets
as one or more prioritized data packets, each prioritized data packet being scheduled
in an order for transmission different from the first order for transmission. The
described aspects further include compressing the one or more prioritized data packets
into one or more compressed prioritized data packets based on a first compression
context. The described aspects further include compressing one or more unprioritized
data packets into one or more compressed unprioritized data packets based on a second
compression context. The described aspects further include scheduling the one or more
compressed prioritized data packets and the one or more compressed unprioritized data
packets in a second order for transmission, the second order differing from the first
order.
[0015] In another aspect, the present methods and apparatuses may include receiving a plurality
of data packets scheduled in a first order for transmission on a first radio bearer.
The described aspects further include prioritizing one or more data packets of the
plurality of data packets as one or more prioritized data packets, each prioritized
data packet being scheduled in an order for transmission different from the first
order for transmission. The described aspects further include determining whether
to establish a second radio bearer for the transmission of the one or more prioritized
data packets. The described aspects further include establishing the second radio
bearer for the transmission of the one or more prioritized data packets based on a
determination to establish the second radio bearer for the transmission of the one
or more prioritized data packets. The described aspects further include compressing
the one or more prioritized data packets into one or more compressed prioritized data
packets based on a first compression context. The described aspects further include
compressing one or more unprioritized data packets into one or more compressed unprioritized
data packets based on a second compression context. The described aspects further
include scheduling the one or more compressed prioritized data packets for transmission
on the second radio bearer. The described aspects further include scheduling the one
or more compressed unprioritized data packets for transmission on the first radio
bearer.
[0016] Additional features of the present aspects are described in more detail below with
respect to FIGS. 1-12.
[0017] It should be noted that the techniques described herein may be used for various wireless
communication networks such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other systems.
The terms "system" and "network" are often used interchangeably. A CDMA system may
implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access
(UTRA), etc. CDMA2000 covers IS-2000, IS-95, and IS-856 standards. IS-2000 Releases
0 and A are commonly referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly
referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes
Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system may implement a radio
technology such as Global System for Mobile Communications (GSM). An OFDMA system
may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA
(E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM
™, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS).
3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are new releases of UMTS that
use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from
an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB
are described in documents from an organization named "3rd Generation Partnership
Project 2" (3GPP2). The techniques described herein may be used for the systems and
radio technologies mentioned above as well as other systems and radio technologies,
including cellular (e.g., LTE) communications over a shared radio frequency spectrum
band. The description below, however, describes an LTE/LTE-A system for purposes of
example, and LTE terminology is used in much of the description below, although the
techniques are applicable beyond LTE/LTE-A applications (e.g., to 5G networks or other
next generation communication systems).
[0018] The following description provides examples, and is not limiting of the scope, applicability,
or examples set forth in the claims. Changes may be made insofar covered within the
scope of the invention as defined by the appended claims.
[0019] Referring to FIGs. 1 and 2, in accordance with various aspects of the present disclosure,
an example wireless communication network 100 includes at least one UE 110 with a
modem 140 having a call processing component 142 that performs data packet prioritization
when stateful compression is enabled. Further, wireless communication network 100
includes at least one base station 105 with a modem 200 having a call processing component
202 that performs data packet prioritization when stateful compression is enabled.
[0020] For example, the UE 110 and base station 105 may enable stateful compression, such
that, the data packets sent on wireless communication links 135 are compressed data
packets. In this example, the call processing component 142 of the UE 110 may include
a compressor component 160 configured to compressed one or more data packets. The
call processing component 202 of the base station 105 may include a decompressor component
220 which receives the compressed data packets and decompresses them accordingly.
Similarly, the call processing component 202 of the base station 105 may include a
compressor component 210 that compresses one or more data packets and transmits them
to the decompressor component 158 of UE 110, which decompresses the compressed data
packets. However, in order to prioritize one or more data packets over other data
packets when stateful compression is enabled between the UE 110 and base station 105,
the UE 110 may employ a number of processes to prioritize certain data packets that
are to be compressed and scheduled for transmission in an order different from the
order in which they were compressed. Thus, according to the present disclosure, the
UE 110 may prioritize one or more data packets when stateful compression is enabled
so as to schedule the prioritized data packets out of order for transmission to base
station 105. Referring to FIG. 2, the call processing component 142 and call processing
component 202 may each include a plurality of sub-components for performing data packet
prioritization when stateful compression is enabled, as described herein.
[0021] In an aspect, the call processing component 142 may be configured to receive a plurality
of data packets 152 scheduled in a first order for transmission. For example, the
call processing component 142 may execute a prioritization component 150 to prioritize
one or more data packets of the plurality of data packets 152 as one or more prioritized
data packets 154, such that each prioritized data packet 154 is scheduled in an order
for transmission different from the first order for transmission. The call processing
component 142 may execute the compressor component 160 to compress one or more unprioritized
data packets 156 of the plurality of data packets 152 into one or more compressed
unprioritized data packets 164. The call processing component 142 may execute a scheduler
component 170 to schedule the one or more prioritized data packets 154 and the one
or more compressed unprioritized data packets 164 in a second order for transmission
with the second order differing from the first order.
[0022] In another aspect, the call processing component 142 may be configured to receive
a plurality of data packets 152 scheduled in a first order for transmission. For example,
the call processing component 142 may execute the prioritization component 150 to
prioritize one or more data packets of the plurality of data packets 152 as one or
more prioritized data packets 154, such that each prioritized data packet 154 is scheduled
in an order for transmission different from the first order for transmission. The
call processing component 142 may execute a aggregation component 180 to aggregate
the one or more prioritized data packets 154 into a first group of prioritized data
packets 154 and aggregate one or more unprioritized data packets 156 into a second
group of unprioritized data packets 156. The call processing component 142 may execute
the compressor component 160 to compress the first group of prioritized data packets
154 into a first group of compressed prioritized data packets 162 and to compress
the second group of unprioritized data packets 156 into a second group of compressed
unprioritized data packets 164. The call processing component 142 may execute the
scheduler component 170 to schedule the first group of compressed prioritized data
packets 162 and the second group of compressed unprioritized data packets 164 in a
second order for transmission with the second order differing from the first order.
[0023] In another aspect, the call processing component 142 may be configured to receive
a plurality of data packets 152 scheduled in a first order for transmission. For example,
the call processing component 142 may execute the prioritization component 150 to
prioritize one or more data packets of the plurality of data packets 152 as one or
more prioritized data packets 154, such that each prioritized data packet 154 is scheduled
in an order for transmission different from the first order for transmission. The
call processing component 142 may execute the compressor component 160 to compress
the one or more prioritized data packets 154 into one or more compressed prioritized
data packets 162 based on a first compression context 166. The call processing component
142 may execute the compressor component 160 to compress one or more unprioritized
data packets 156 into one or more compressed unprioritized data packets 164 based
on a second compression context 168. For example, the first compression context 166
may correspond to a first compressor memory configured to store data strings for the
compressed prioritized data packets 162, and the second compression context 168 corresponds
to a second compressor memory configured to store data strings for the one or more
compressed unprioritized data packets 164. The call processing component 142 may execute
the scheduler component 170 to schedule scheduling the one or more compressed prioritized
data packets 162 and the one or more compressed unprioritized data packets 164 in
a second order for transmission with the second order differing from the first order.
[0024] In another aspect, the call processing component 142 may be configured to receive
a plurality of data packets 152 scheduled in a first order for transmission on a first
radio bearer 230. In an instance, the first radio bearer 230 corresponds to a communication
channel for transmitting data packets. For example, the call processing component
142 may execute the prioritization component 150 to prioritize one or more data packets
of the plurality of data packets 152 as one or more prioritized data packets 154,
such that each prioritized data packet 154 is scheduled in an order for transmission
different from the first order for transmission. The call processing component 142
may execute a determination component 190 to determine whether to establish a second
radio bearer 240 for the transmission of the one or more prioritized data packets
154, and to establish the second radio bearer 240 for the transmission of the one
or more prioritized data packets 154 based on a determination to establish the second
radio bearer 240 for the transmission of the one or more prioritized data packets
154. In an instance, the second radio bearer 240 corresponds to a communication channel
for transmitting data packets. The call processing component 142 may execute the compressor
component 160 to compress the one or more prioritized data packets 154 into one or
more compressed prioritized data packets 162 based on a first compression context
166. The call processing component 142 may execute the compressor component 160 to
compress one or more unprioritized data packets 156 into one or more compressed unprioritized
data packets 164 based on a second compression context 168. The call processing component
142 may execute the scheduler component 170 to schedule the one or more compressed
prioritized data packets 162 for transmission on the second radio bearer 240. The
call processing component 142 may execute the scheduler component 170 to schedule
the one or more compressed unprioritized data packets 164 for transmission on the
first radio bearer 230.
[0025] The wireless communication network 100 may include one or more base stations 105,
one or more UEs 110, and a core network 115. The core network 115 may provide user
authentication, access authorization, tracking, internet protocol (IP) connectivity,
and other access, routing, or mobility functions. The base stations 105 may interface
with the core network 115 through backhaul links 120 (e.g., S1, etc.). The base stations
105 may perform radio configuration and scheduling for communication with the UEs
110, or may operate under the control of a base station controller (not shown). In
various examples, the base stations 105 may communicate, either directly or indirectly
(e.g., through core network 115), with one another over backhaul links 125 (e.g.,
X1, etc.), which may be wired or wireless communication links.
[0026] The base stations 105 may wirelessly communicate with the UEs 110 via one or more
base station antennas. Each of the base stations 105 may provide communication coverage
for a respective geographic coverage area 130. In some examples, base stations 105
may be referred to as a base transceiver station, a radio base station, an access
point, an access node, a radio transceiver, a NodeB, eNodeB (eNB), gNodeB (gNB), Home
NodeB, a Home eNodeB, a relay, or some other suitable terminology. The geographic
coverage area 130 for a base station 105 may be divided into sectors or cells making
up only a portion of the coverage area (not shown). The wireless communication network
100 may include base stations 105 of different types (e.g., macro base stations or
small cell base stations, described below). Additionally, the plurality of base stations
105 may operate according to different ones of a plurality of communication technologies
(e.g., 5G (New Radio or "NR"), fourth generation (4G)/LTE, 3G, Wi-Fi, Bluetooth, etc.),
and thus there may be overlapping geographic coverage areas 130 for different communication
technologies.
[0027] In some examples, the wireless communication network 100 may be or include one or
any combination of communication technologies, including a new radio (NR) or 5G technology,
a Long Term Evolution (LTE) or LTE-Advanced (LTE-A) or MuLTEfire technology, a Wi-Fi
technology, a Bluetooth technology, or any other long or short range wireless communication
technology. In LTE/LTE-A/MuLTEfire networks, the term evolved node B (eNB) may be
generally used to describe the base stations 105, while the term UE may be generally
used to describe the UEs 110. The wireless communication network 100 may be a heterogeneous
technology network in which different types of eNBs provide coverage for various geographical
regions. For example, each eNB or base station 105 may provide communication coverage
for a macro cell, a small cell, or other types of cell. The term "cell" is a 3GPP
term that can be used to describe a base station, a carrier or component carrier associated
with a base station, or a coverage area (e.g., sector, etc.) of a carrier or base
station, depending on context.
[0028] A macro cell may generally cover a relatively large geographic area (e.g., several
kilometers in radius) and may allow unrestricted access by the UEs 110 with service
subscriptions with the network provider.
[0029] A small cell may include a relative lower transmit-powered base station, as compared
with a macro cell, that may operate in the same or different frequency bands (e.g.,
licensed, unlicensed, etc.) as macro cells. Small cells may include pico cells, femto
cells, and micro cells according to various examples. A pico cell, for example, may
cover a small geographic area and may allow unrestricted access by the UEs 110 with
service subscriptions with the network provider. A femto cell may also cover a small
geographic area (e.g., a home) and may provide restricted access and/or unrestricted
access by the UEs 110 having an association with the femto cell (e.g., in the restricted
access case, the UEs 110 in a closed subscriber group (CSG) of the base station 105,
which may include the UEs 110 for users in the home, and the like). A micro cell may
cover a geographic area larger than a pico cell and a femto cell, but smaller than
a macro cell. An eNB for a macro cell may be referred to as a macro eNB. An eNB for
a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a
home eNB. An eNB may support one or multiple (e.g., two, three, four, and the like)
cells (e.g., component carriers).
[0030] The communication networks that may accommodate some of the various disclosed examples
may be packet-based networks that operate according to a layered protocol stack and
data in the user plane may be based on the IP. A user plane protocol stack (e.g.,
packet data convergence protocol (PDCP), radio link control (RLC), MAC, etc.), may
perform packet segmentation and reassembly to communicate over logical channels. For
example, a MAC layer may perform priority handling and multiplexing of logical channels
into transport channels. The MAC layer may also use hybrid automatic repeat/request
(HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the
control plane, the RRC protocol layer may provide establishment, configuration, and
maintenance of an RRC connection between a UE 110 and the base station 105. The RRC
protocol layer may also be used for core network 115 support of radio bearers for
the user plane data. At the physical (PHY) layer, the transport channels may be mapped
to physical channels.
[0031] The UEs 110 may be dispersed throughout the wireless communication network 100, and
each UE 110 may be stationary or mobile. A UE 110 may also include or be referred
to by those skilled in the art as a mobile station, a subscriber station, a mobile
unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless
device, a wireless communications device, a remote device, a mobile subscriber station,
an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset,
a user agent, a mobile client, a client, or some other suitable terminology. A UE
110 may be a cellular phone, a smart phone, a personal digital assistant (PDA), a
wireless modem, a wireless communication device, a handheld device, a tablet computer,
a laptop computer, a cordless phone, a smart watch, a wireless local loop (WLL) station,
an entertainment device, a vehicular component, a customer premises equipment (CPE),
or any device capable of communicating in wireless communication network 100. Additionally,
a UE 110 may be Internet of Things (IoT) and/or machine-to-machine (M2M) type of device,
e.g., a low power, low data rate (relative to a wireless phone, for example) type
of device, that may in some aspects communicate infrequently with wireless communication
network 100 or other UEs. A UE 110 may be able to communicate with various types of
base stations 105 and network equipment including macro eNBs, small cell eNBs, macro
gNBs, small cell gNBs, relay base stations, and the like.
[0032] UE 110 may be configured to establish one or more wireless communication links 135
with one or more base stations 105. The wireless communication links 135 shown in
wireless communication network 100 may carry uplink (UL) transmissions from a UE 110
to a base station 105, or downlink (DL) transmissions, from a base station 105 to
a UE 110. The downlink transmissions may also be called forward link transmissions
while the uplink transmissions may also be called reverse link transmissions. Each
wireless communication link 135 may include one or more carriers, where each carrier
may be a signal made up of multiple sub-carriers (e.g., waveform signals of different
frequencies) modulated according to the various radio technologies described above.
Each modulated signal may be sent on a different sub-carrier and may carry control
information (e.g., reference signals, control channels, etc.), overhead information,
user data, etc. In an aspect, the wireless communication links 135 may transmit bidirectional
communications using frequency division duplex (FDD) (e.g., using paired spectrum
resources) or time division duplex (TDD) operation (e.g., using unpaired spectrum
resources). Frame structures may be defined for FDD (e.g., frame structure type 1)
and TDD (e.g., frame structure type 2). Moreover, in some aspects, the wireless communication
links 135 may represent one or more broadcast channels.
[0033] In some aspects of the wireless communication network 100, the base stations 105
or UEs 110 may include multiple antennas for employing antenna diversity schemes to
improve communication quality and reliability between the base stations 105 and UEs
110. Additionally or alternatively, the base stations 105 or UEs 110 may employ multiple
input multiple output (MIMO) techniques that may take advantage of multi-path environments
to transmit multiple spatial layers carrying the same or different coded data.
[0034] Wireless communication network 100 may support operation on multiple cells or carriers,
a feature which may be referred to as carrier aggregation (CA) or multi-carrier operation.
A carrier may also be referred to as a component carrier (CC), a layer, a channel,
etc. The terms "carrier," "component carrier," "cell," and "channel" may be used interchangeably
herein. A UE 110 may be configured with multiple downlink CCs and one or more uplink
CCs for carrier aggregation. Carrier aggregation may be used with both FDD and TDD
component carriers. The base stations 105 and UEs 110 may use spectrum up to Y MHz
(e.g., Y = 5, 10, 15, or 20 MHz) bandwidth per carrier allocated in a carrier aggregation
of up to a total of Yx MHz (x = number of component carriers) used for transmission
in each direction. The carriers may or may not be adjacent to each other. Allocation
of carriers may be asymmetric with respect to DL and UL (e.g., more or less carriers
may be allocated for DL than for UL). The component carriers may include a primary
component carrier and one or more secondary component carriers. A primary component
carrier may be referred to as a primary cell (PCell) and a secondary component carrier
may be referred to as a secondary cell (SCell).
[0035] The wireless communications network 100 may further include base stations 105 operating
according to Wi-Fi technology, e.g., Wi-Fi access points, in communication with UEs
110 operating according to Wi-Fi technology, e.g., Wi-Fi stations (STAs) via communication
links in an unlicensed frequency spectrum (e.g., 5 GHz). When communicating in an
unlicensed frequency spectrum, the STAs and AP may perform a clear channel assessment
(CCA) or listen before talk (LBT) procedure prior to communicating in order to determine
whether the channel is available.
[0036] Additionally, one or more of the base stations 105 and/or UEs 110 may operate according
to a NR or 5G technology referred to as millimeter wave (mmW or mmwave) technology.
For example, mmW technology includes transmissions in mmW frequencies and/or near
mmW frequencies. Extremely high frequency (EHF) is part of the radio frequency (RF)
in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength
between 1 millimeter and 10 millimeters. Radio waves in this band may be referred
to as a millimeter wave. Near mmW may extend down to a frequency of 3 GHz with a wavelength
of 100 millimeters. For example, the super high frequency (SHF) band extends between
3 GHz and 30 GHz, and may also be referred to as centimeter wave. Communications using
the mmW and/or near mmW radio frequency band has extremely high path loss and a short
range. As such, base stations 105 and/or UEs 110 operating according to the mmW technology
may utilize beamforming in their transmissions to compensate for the extremely high
path loss and short range.
[0037] Although the operations of the call processing component 142 are described herein
with regard to a UE, such as UE 110, the components of the call processing component
202 of the base station 105 may be the same as or similar to the corresponding components
of the call processing component 142 of the UE 110, as described above, but configured
or otherwise programmed for base station operations as opposed to UE operations.
[0038] FIG. 3 depicts a conceptual diagram of an example of a scheme 300 for prioritizing
data packets when stateful compression is enabled at a UE communicating with a base
station. For example, the UE and the base station may correspond to the UE 110 and
the base station 105, respectively, located in wireless communication network 100
as shown in FIG. 1. The UE 110 may include a modem 140 having a call processing component
142 that performs prioritization of data packets when stateful compression is enabled
by scheduling prioritized data packet(s) 154 for transmission as uncompressed data
packets.
[0039] In an aspect, a plurality of data packets 302, 304, 306, 308, 310, and 312 scheduled
in a first order for transmission may be received by the call processing component
142. For example, the call processing component 142 may execute prioritization component
150 to prioritize the plurality of data packets 302, 304, 306, 308, 310, and 312.
As a result of prioritization, data packets 302', 306', and 310' remain unprioritized,
while data packets 304', 308', and 312' are prioritized. Each prioritized data packet
304', 308', and 312' is designated to be scheduled in an order for transmission different
from the first order for transmission.
[0040] In an aspect, the call processing component 142 may execute the compressor component
160 to compress the unprioritized data packets 302', 306' and 310' into compressed
unprioritized data packets 314, 316, and 318. The prioritized data packets 304', 308',
and 312' skip the compression process, so that they are not bound to the first order
of transmission. Further, the call processing component 142 may execute the scheduler
component 170 to schedule the prioritized data packets 304', 308', and 312', and the
compressed unprioritized data packets 314, 316, and 318, in a second order for transmission.
For example, the second order for transmission differs from that of the first order
in that the prioritized data packets 304', 308', and 312' are scheduled for transmission
before the compressed unprioritized data packets 314, 316, and 318. As a result, the
UE 110 may reconfigure the order of transmission of data packets in order to improve
downlink performance while still improving uplink compression gain.
[0041] FIG. 4 depicts a conceptual diagram of an example of a scheme 400 for prioritizing data
packets when stateful compression is enabled at a UE communicating with a base station.
For example, the UE and the base station may correspond to the UE 110 and the base
station 105, respectively, located in wireless communication network 100 as shown
in FIG. 1. The UE 110 may include a modem 140 having a call processing component 142
that performs prioritization of data packets when stateful compression is enabled
by aggregating the data packets of the plurality of data packets 152 before compression.
[0042] In an aspect, a plurality of data packets 302, 304, 306, 308, 310, and 312 scheduled
in a first order for transmission may be received by the call processing component
142. For example, the call processing component 142 may execute prioritization component
150 to prioritize the plurality of data packets 302, 304, 306, 308, 310, and 312.
As a result of prioritization, data packets 302', 306', and 310' remain unprioritized,
while data packets 304', 308', and 312' are prioritized. Each prioritized data packet
304', 308' and 312' is scheduled in an order for transmission different from the first
order for transmission.
[0043] In an aspect, the call processing component 142 may execute the aggregation component
180 to aggregate the prioritized data packets 304', 308' and 312' into a first group
402 of prioritized data packets and aggregate unprioritized data packets 302', 306'
and 310' into a second group 404 of unprioritized data packets. Further, the call
processing component 142 may execute the compressor component 160 to compress the
first group 402 of prioritized data packets 304', 308', and 312' into a first group
402 of compressed prioritized data packets 406, 408, and 410, and compress the second
group 404 of unprioritized data packets 302', 306', and 310' into a second group 404
of compressed unprioritized data packets 314, 316, and 318.
[0044] In an aspect, the call processing component 142 may execute the scheduler component
170 to schedule the first group 402 of compressed prioritized data packets 406, 408,
and 410, and schedule the second group 404 of compressed unprioritized data packets
314, 316, and 318 in a second order for transmission. For example, the first group
402 of compressed prioritized data packets 406, 408, and 410 have priority over the
second group 404 of compressed unprioritized data packets 314, 316, and 318. As such,
the order of transmission changes from the original first order of the data packets
in the plurality of data packets 302, 304, 306, 308, 310, and 312. By transmitting
the first group 402 before the second group 404, the UE 110 improves downlink performance
while still improving uplink compression gain.
[0045] FIG. 5 depicts a conceptual diagram of an example of a scheme 500 for prioritizing data
packets when stateful compression is enabled at a UE communicating with a base station.
For example, the UE and the base station may correspond to the UE 110 and the base
station 105, respectively, located in wireless communication network 100 as shown
in FIG. 1. The UE 110 may include a modem 140 having a call processing component 142
that performs prioritization of data packets when stateful compression is enabled
by compressing the plurality of data packets using different compression contexts.
[0046] In an aspect, a plurality of data packets 302, 304, 306, 308, 310, and 312 scheduled
in a first order for transmission may be received by the call processing component
142. For example, the call processing component 142 may execute prioritization component
150 to prioritize the plurality of data packets 302, 304, 306, 308, 310, and 312.
As a result of prioritization, data packets 302', 306', and 310' remain unprioritized,
while data packets 304', 308', and 312' are prioritized. Each prioritized data packet
304', 308' and 312' is designated to be scheduled in an order for transmission different
from the first order for transmission.
[0047] In an aspect, the call processing component 142 may execute the compressor component
160 to compress the prioritized data packets 304', 308', and 312' into one or more
compressed prioritized data packets 504, 508, and 512 based on a first compression
context 166. Further, the call processing component 142 may execute the compressor
component 160 to compress the unprioritized data packets 302', 306', and 310' into
one or more compressed unprioritized data packets 502, 506, and 510 based on a second
compression context 168. For example, the first compression context 166 may correspond
to compressing the prioritized data packets 304', 308', and 312' using a first compressor
memory configured to store data strings for the prioritized data packets 304', 308',
and 312', and the second compression context 168 corresponds to compressing the unprioritized
data packets 302', 306', and 310' a second compressor memory configured to store data
strings for the one or more unprioritized data packets 302', 306', and 310'. As such,
each compressed prioritized data packet 504, 508, and 512, and each compressed unprioritized
data packet 502, 506, and 510 includes a header with compression context information
indicating either the use of the first compressor memory or the second compressor
memory, so that a decompressor, such as decompressor component 220, knows which compressor
memory to use to decompress the received compressed data packet.
[0048] In an aspect, the call processing component 142 may execute the scheduler component
170 to schedule the compressed prioritized data packets 504, 508, and 512, and the
compressed unprioritized data packets 502, 506, and 510, in a second order for transmission.
For example, the order of transmission is independent between data packets compressed
based on the first compression context 166 and the second compression context 168.
As such, the scheduler component 170 may schedule the compressed prioritized data
packets 504, 508, and 512 independently of the compressed unprioritized data packets
502, 506, and 510 since compressed prioritized data packets 504, 508, and 512 will
be decompressed using a first compressor memory, and compressed unprioritized data
packets 502, 506, and 510 will be decompressed using a second compressor memory.
[0049] FIG. 6 depicts a conceptual diagram of an example of a scheme 600 for prioritizing
data packets when stateful compression is enabled at a UE communicating with a base
station. For example, the UE and the base station may correspond to the UE 110 and
the base station 105, respectively, located in wireless communication network 100
as shown in FIG. 1. The UE 110 may include a modem 140 having a call processing component
142 that performs prioritization of data packets when stateful compression is enabled
by establishing a second radio bearer, that is different from a first radio bearer,
for prioritized data packets.
[0050] In an aspect, a plurality of data packets 302, 304, 306, 308, 310, and 312 scheduled
in a first order for transmission may be received by the call processing component
142. For example, the call processing component 142 may execute prioritization component
150 to prioritize the plurality of data packets 302, 304, 306, 308, 310, and 312.
As a result of prioritization, data packets 302', 306', and 310' remain unprioritized,
while data packets 304', 308', and 312' are prioritized. Each prioritized data packet
304', 308' and 312' is designated to be scheduled in an order for transmission different
from the first order for transmission.
[0051] In an aspect, the call processing component 142 may execute determination component
190 to determine whether to establish a second radio bearer 604 for the transmission
of the prioritized data packets 304', 308' and 312', and to establish the second radio
bearer 604 for the transmission of the prioritized data packets 304', 308' and 312'.
[0052] In an aspect, the call processing component 142 may execute the compressor component
160 to compressing the prioritized data packets 304', 308', and 312' into one or more
compressed prioritized data packets 504, 508, and 512 based on a first compression
context 166. Further, the call processing component 142 may execute the compressor
component 160 to compress the unprioritized data packets 302', 306', and 310' into
one or more compressed unprioritized data packets 502, 506, and 510 based on a second
compression context 168. For example, the first compression context 166 may correspond
to compressing the prioritized data packets 304', 308', and 312' using a first compressor
memory configured to store data strings for the prioritized data packets 304', 308',
and 312', and the second compression context 168 corresponds to compressing the unprioritized
data packets 302', 306', and 310' a second compressor memory configured to store data
strings for the one or more unprioritized data packets 302', 306', and 310'. As such,
each compressed prioritized data packet 504, 508, and 512, and each compressed unprioritized
data packet 502, 506, and 510 includes a header with compression context information
indicating either the use of the first compressor memory or the second compressor
memory, so that a decompressor, such as decompressor component 220, knows which compressor
memory to use to decompress the received compressed data packet.
[0053] In an aspect, the call processing component 142 may execute the scheduler component
170 to schedule the compressed prioritized data packets 504, 508, and 512 for transmission
on the second radio bearer 604. Moreover, the call processing component 142 may execute
the scheduler component 170 to schedule the compressed unprioritized data packet 502,
506, and 510 for transmission on the first radio bearer 602. As a result, the information
in the prioritized data packets 304', 308', and 312' may be transmitted as compressed
prioritized data packet 504, 508, and 512 on the second bearer 604 independently of
the compressed unprioritized data packet 502, 506, and 510 transmitted on the first
radio bearer 602.
[0054] Referring to
FIG. 7, for example, a method 700 of wireless communication in operating UE 110 according
to the above-described aspects to prioritizing data packets when stateful compression
is enabled includes one or more of the herein-defined actions.
[0055] At block 702, the method 700 may receive a plurality of data packets scheduled in
a first order for transmission. For example, the UE 110 may execute call processing
component 142 to receive a plurality of data packets 152 scheduled in a first order
for transmission.
[0056] At block 704, the method 700 may prioritize one or more data packets of the plurality
of data packets as one or more prioritized data packets, each prioritized data packet
being scheduled in an order for transmission different from the first order for transmission.
For example, the UE 110 and/or call processing component 142 may execute the prioritization
component 150 to prioritize one or more data packets of the plurality of data packets
152 as one or more prioritized data packets 154 with each prioritized data packet
154 being scheduled in an order for transmission different from the first order for
transmission.
[0057] In an aspect, prioritizing the one or more data packets of the plurality of data
packets 152 further comprises prioritizing the one or more data packets of the plurality
of data packets 152 scheduled for transmission based on a traffic model of a data
flow corresponding to the plurality of data packets 152. For example, the traffic
model corresponds to a bi-directional communication and indicates that data packets
corresponding to acknowledgment messages are to be prioritized. In this example, the
acknowledgement messages correspond to Transmission Control Protocol (TCP) Acknowledgements
(ACKs). Moreover, the unprioritized data packet corresponds to Uplink (UL) Transmission
Control Protocol (TCP) DATA.
[0058] In an aspect, prioritizing the one or more data packets of the plurality of data
packets 152 further comprises prioritizing the one or more data packets of the plurality
of data packets 152 in at least one of a Transmission Control Protocol (TCP) layer
or Internet Protocol (IP) layer.
[0059] At block 706, the method 700 may compress one or more unprioritized data packets
of the plurality of data packets into one or more compressed unprioritized data packets.
For example, the UE 110 and/or call processing component 142 may execute the compressor
component 160 to compress one or more unprioritized data packets 156 of the plurality
of data packets 152 into one or more compressed unprioritized data packets 164.
[0060] In an aspect, compressing the one or more unprioritized data packets 156 of the plurality
of data packets 152 into the one or more compressed unprioritized data packets 164
further comprises compressing the one or more unprioritized data packets 156 of the
plurality of data packets 152 into the one or more compressed unprioritized data packets
164 based on at least one of a Robust Header Compression (ROHC) procedure or an Uplink
Data Compression (UDC) procedure.
[0061] At block 708, the method 700 may schedule the one or more prioritized data packets
and the one or more compressed unprioritized data packets in a second order for transmission,
the second order differing from the first order. For example, the UE 110 and/or call
processing component 142 may execute the scheduler component 170 to schedule the one
or more prioritized data packets 154 and the one or more compressed unprioritized
data packets 164 in a second order for transmission with the second order differing
from the first order. In an example, the second order for transmission corresponds
to scheduling the one or more prioritized data packets 154 for transmission prior
to the one or more compressed unprioritized data packets 164.
[0062] Referring to
FIG. 8, for example, a method 800 of wireless communication in operating UE 110 according
to the above-described aspects to prioritizing data packets when stateful compression
is enabled includes one or more of the herein-defined actions.
[0063] At block 802, the method 800 may receive a plurality of data packets scheduled in
a first order for transmission. For example, the UE 110 may execute call processing
component 142 to receive a plurality of data packets 152 scheduled in a first order
for transmission.
[0064] At block 804, the method 800 may prioritize one or more data packets of the plurality
of data packets as one or more prioritized data packets, each prioritized data packet
being scheduled in an order for transmission different from the first order for transmission.
For example, the UE 110 and/or call processing component 142 may execute the prioritization
component 150 to prioritize one or more data packets of the plurality of data packets
152 as one or more prioritized data packets 154 with each prioritized data packet
154 being scheduled in an order for transmission different from the first order for
transmission.
[0065] In an aspect, prioritizing the one or more data packets of the plurality of data
packets 152 further comprises prioritizing the one or more data packets of the plurality
of data packets 152 in at least one of a TCP layer or IP layer. In an example, the
one or more prioritized data packets 154 correspond to TCP ACKs. Further, the one
or more unprioritized data packets 156 correspond to UL TCP DATA.
[0066] At block 806, the method 800 may aggregate the one or more prioritized data packets
into a first group of prioritized data packets and aggregate one or more unprioritized
data packets into a second group of unprioritized data packets. For example, the UE
110 and/or call processing component 142 may execute the aggregation component 180
to aggregate the one or more prioritized data packets 154 into a first group 402 of
prioritized data packets 154 and aggregate the one or more unprioritized data packets
156 into a second group 404 of unprioritized data packets 156.
[0067] At block 808, the method 800 may compress the first group of prioritized data packets
into a first group of compressed prioritized data packets and the second group of
unprioritized data packets into a second group of compressed unprioritized data packets.
For example, the UE 110 and/or call processing component 142 may execute the compressor
component 160 to compress the first group 402 of prioritized data packets 154 into
a first group 402 of compressed prioritized data packets 162 and compress the second
group 404 of unprioritized data packets 156 into a second group 404 of compressed
unprioritized data packets 164.
[0068] In an aspect, compressing the first group 402 of prioritized data packets 154 into
a first group 402 of compressed prioritized data packets 162 and compressing the second
group 404 of unprioritized data packets 156 into a second group 404 of compressed
unprioritized data packets 164 further comprises compressing the first group 402 of
prioritized data packets 154 into a first group 402 of compressed prioritized data
packets 162 and compressing the second group 404 of unprioritized data packets 156
into a second group 404 of compressed unprioritized data packets 164 based on at least
one of a ROHC procedure or an UDC procedure.
[0069] At block 810, the method 800 may schedule the first group of compressed prioritized
data packets and the second group of compressed unprioritized data packets in a second
order for transmission, the second order differing from the first order. For example,
the UE 110 and/or call processing component 142 may execute the scheduler component
170 to schedule the first group 402 of compressed prioritized data packets 162 and
the second group 404 of compressed unprioritized data packets 164 in a second order
for transmission with the second order differing from the first order. In an example,
the second order for transmission corresponds to scheduling the first group 402 of
compressed prioritized data packets 162 for transmission prior to the second group
404 of compressed unprioritized data packets 164.
[0070] Referring to
FIG. 9, for example, a method 900 of wireless communication in operating UE 110 according
to the above-described aspects to prioritizing data packets when stateful compression
is enabled includes one or more of the herein-defined actions.
[0071] At block 902, the method 900 may receive a plurality of data packets scheduled in
a first order for transmission. For example, the UE 110 may execute call processing
component 142 to receive a plurality of data packets 152 scheduled in a first order
for transmission.
[0072] At block 904, the method 900 may prioritize one or more data packets of the plurality
of data packets as one or more prioritized data packets, each prioritized data packet
being scheduled in an order for transmission different from the first order for transmission.
For example, the UE 110 and/or call processing component 142 may execute the prioritization
component 150 to prioritize one or more data packets of the plurality of data packets
152 as one or more prioritized data packets 154 with each prioritized data packet
154 being scheduled in an order for transmission different from the first order for
transmission. In an aspect, prioritizing the one or more data packets of the plurality
of data packets 152 further comprises prioritizing the one or more data packets of
the plurality of data packets 152 in at least one of a TCP layer or IP layer. In an
example, the one or more prioritized data packets 154 correspond to TCP ACKs. Further,
the one or more unprioritized data packets 156 correspond to UL TCP DATA.
[0073] At block 906, the method 900 may compress the one or more prioritized data packets
into one or more compressed prioritized data packets based on a first compression
context. For example, the UE 110 and/or call processing component 142 may execute
the compressor component 160 to compress the one or more prioritized data packets
154 into one or more compressed prioritized data packets 162 based on a first compression
context 166.
[0074] At block 908, the method 900 may compress one or more unprioritized data packets
into one or more compressed unprioritized data packets based on a second compression
context. For example, the UE 110 and/or call processing component 142 may execute
the compressor component 160 to compress one or more unprioritized data packets 156
into one or more compressed unprioritized data packets 164 based on a second compression
context 168.
[0075] In an aspect, compressing the one or more prioritized data packets 154 into one or
more compressed prioritized data packets 162 based on a first compression context
166 and compressing the one or more unprioritized data packets 156 into one or more
compressed unprioritized data packets 164 based on a second compression context 168
further comprises compressing the one or more prioritized data packets 154 into one
or more compressed prioritized data packets 162 and compressing the one or more unprioritized
data packets 156 into one or more compressed unprioritized data packets 164 based
on an UDC procedure. In an example, the first compression context 166 corresponds
to a first compressor memory configured to store data strings for the one or more
prioritized data packets 154 and the second compression context 168 corresponds to
a second compressor memory configured to store data strings for the one or more unprioritized
data packets 156. Further, each compressed prioritized data packet 162 and each compressed
unprioritized data packet 164 includes a header with compression context information
indicating either the first compressor memory or the second compressor memory. Additionally,
the UDC procedure includes utilizing at least one of a U DC data packet, a UDC control
packet, and a Radio Resource Control (RRC) signaling message configured to support
multiple compressor memories.
[0076] In another aspect, compressing the one or more prioritized data packets 154 into
one or more compressed prioritized data packets 162 based on a first compression context
166 and compressing the one or more unprioritized data packets 156 into one or more
compressed unprioritized data packets 164 based on a second compression context 168
further comprises compressing the one or more prioritized data packets 154 into one
or more compressed prioritized data packets 162 and compressing the one or more unprioritized
data packets 156 into one or more compressed unprioritized data packets 164 based
on a ROHC procedure. In an example, each compressed prioritized data packet 162 and
each compressed unprioritized data packet 164 includes a header with flow context
identification indicating a priority of each compressed prioritized data packet 162
or each compressed unprioritized data packet 164.
[0077] At block 910, the method 900 may schedule the one or more compressed prioritized
data packets and the one or more compressed unprioritized data packets in a second
order for transmission, the second order differing from the first order. For example,
the UE 110 and/or call processing component 142 may execute the scheduler component
170 to schedule the one or more compressed prioritized data packets 162 and the one
or more compressed unprioritized data packets 164 in a second order for transmission
with the second order differing from the first order.
[0078] In an aspect, method 900 may further include determining whether a prioritization
parameter disabling prioritization satisfies a threshold, and disabling prioritization
of the one or more data packets based on a determination that the prioritization parameter
satisfies the threshold. For example, the prioritization parameter corresponds to
an amount of time that prioritization has occurred, and the threshold corresponds
to a maximum period of time configured for prioritization. In another example, the
prioritization parameter corresponds to a number of remaining uncompressed data packets
of the plurality of data packets 152, and the threshold corresponds to a minimum number
of remaining data packets configured for prioritization.
[0079] Referring to
FIGs. 10A, 10B, and 10C, for example, a method 1000 of wireless communication in operating the UE 110 according
to the above-described aspects to prioritizing data packets when stateful compression
is enabled includes one or more of the herein-defined actions.
[0080] At block 1002, the method 1000 may receive a plurality of data packets scheduled
in a first order for transmission on a first radio bearer. For example, the UE 110
may execute call processing component 142 to receive a plurality of data packets 152
scheduled in a first order for transmission on a first radio bearer 602.
[0081] At block 1004, the method 1000 may prioritize one or more data packets of the plurality
of data packets as one or more prioritized data packets, each prioritized data packet
being scheduled in an order for transmission different from the first order for transmission.
For example, the UE 110 and/or call processing component 142 may execute the prioritization
component 150 to prioritize one or more data packets of the plurality of data packets
152 as one or more prioritized data packets 154 with each prioritized data packet
154 being scheduled in an order for transmission different from the first order for
transmission.
[0082] In an aspect, prioritizing the one or more data packets of the plurality of data
packets 152 further comprises prioritizing the one or more data packets of the plurality
of data packets 152 in at least one of a TCP layer or IP layer. In an example, the
one or more prioritized data packets 154 correspond to TCP ACKs. Further, the one
or more unprioritized data packets 156 correspond to UL TCP DATA.
[0083] At block 1006, the method 1000 may determine whether to establish a second radio
bearer for the transmission of the one or more prioritized data packets. For example,
the UE 110 and/or call processing component 142 may execute the determination component
190 to determine whether to establish a second radio bearer 604 for the transmission
of the one or more prioritized data packets 154. If the determination component 190
determines to establish the second radio bearer 604, then method 1000 proceeds to
block 1008. If not, then method 1000 proceeds to block 1010.
[0084] At block 1008, the method 1000 may establish the second radio bearer for the transmission
of the one or more prioritized data packets based on a determination to establish
the second radio bearer for the transmission of the one or more prioritized data packets.
For example, the UE 110 and/or call processing component 142 may execute the determination
component 190 to establish the second radio bearer 604 for the transmission of the
one or more prioritized data packets 154 based on a determination to establish the
second radio bearer 604 for the transmission of the one or more prioritized data packets
154. In an example, method 1000 includes enabling compression of the one or more prioritized
data packets 154 on the second radio bearer 604.
[0085] At block 1010, the method 1000 may compress the one or more prioritized data packets
into one or more compressed prioritized data packets based on a first compression
context. For example, the UE 110 and/or call processing component 142 may execute
the compressor component 160 to compress the one or more prioritized data packets
154 into one or more compressed prioritized data packets 162 based on a first compression
context 166.
[0086] At block 1012, the method 1000 may compress one or more unprioritized data packets
into one or more compressed unprioritized data packets based on a second compression
context. For example, the UE 110 and/or call processing component 142 may execute
the compressor component 160 to compress one or more unprioritized data packets 156
into one or more compressed unprioritized data packets 164 based on a second compression
context 168.
[0087] In an aspect, compressing the one or more prioritized data packets 154 into one or
more compressed prioritized data packets 162 based on a first compression context
166 and compressing the one or more unprioritized data packets 156 into one or more
compressed unprioritized data packets 164 based on a second compression context 168
further comprises compressing the one or more prioritized data packets 154 into one
or more compressed prioritized data packets 162 and compressing the one or more unprioritized
data packets 156 into one or more compressed unprioritized data packets 164 based
on an UDC procedure. In an example, the first compression context 166 corresponds
to a first compressor memory configured to store data strings for the one or more
prioritized data packets 154 and the second compression context 168 corresponds to
a second compressor memory configured to store data strings for the one or more unprioritized
data packets 156. Further, each compressed prioritized data packet 162 and each compressed
unprioritized data packet 164 includes a header with compression context information
indicating either the first compressor memory or the second compressor memory. Additionally,
the UDC procedure includes utilizing at least one of a UDC data packet, a UDC control
packet, and a Radio Resource Control (RRC) signaling message configured to support
multiple compressor memories.
[0088] In another aspect, compressing the one or more prioritized data packets 154 into
one or more compressed prioritized data packets 162 based on a first compression context
166 and compressing the one or more unprioritized data packets 156 into one or more
compressed unprioritized data packets 164 based on a second compression context 168
further comprises compressing the one or more prioritized data packets 154 into one
or more compressed prioritized data packets 162 and compressing the one or more unprioritized
data packets 156 into one or more compressed unprioritized data packets 164 based
on a ROHC procedure. In an example, each compressed prioritized data packet 162 and
each compressed unprioritized data packet 164 includes a header with flow context
identification indicating a priority of each compressed prioritized data packet 162
or each compressed unprioritized data packet 164.
[0089] Based on the results of the determination at block 1006, the method 1000 may proceed
to either block 1014 or 1018. For example, if the determination component 190 establishes
the second radio bearer 604 for the transmission of the one or more prioritized data
packets 154, then method 1000 proceeds to block 1014. Otherwise, if the determination
component 190 does not establish the second radio bearer 604 for the transmission
of the one or more prioritized data packets 154, then method 1000 proceeds to block
1018.
[0090] At block 1014, the method 1000 may schedule the one or more compressed prioritized
data packets for transmission on the second radio bearer. For example, the UE 110
and/or call processing component 142 may execute the scheduler component 170 to schedule
the one or more compressed prioritized data packets 162 for transmission on the second
radio bearer 604.
[0091] At block 1016, the method 1000 may schedule the one or more compressed unprioritized
data packets for transmission on the first radio bearer. For example, the UE 110 and/or
call processing component 142 may execute the scheduler component 170 to schedule
the one or more compressed unprioritized data packets 164 for transmission on the
first radio bearer 602.
[0092] At block 1018, the method 1000 may optionally schedule the one or more compressed
prioritized data packets and the one or more compressed unprioritized for transmission
on the first radio bearer based on a determination not to establish the second radio
bearer for the transmission of the one or more prioritized data packets. For example,
the UE 110 and/or call processing component 142 may execute the scheduler component
170 to schedule the one or more compressed prioritized data packets 162 and the one
or more compressed unprioritized data packets 164 for transmission on the first radio
bearer 602 based on a determination not to establish the second radio bearer 604 for
the transmission of the one or more prioritized data packets 154.
[0093] In an aspect, method 1000 further includes transmitting the one or more compressed
prioritized data packets 162 and the one or more compressed unprioritized data packets
164. For example, UE 110 may execute transceiver 1102 (FIG. 11) to transmit the one
or more compressed prioritized data packets 162 on the second radio bearer 604. Further,
UE 110 may execute transceiver 1102 to transmit the one or more compressed unprioritized
data packets 164 on the first radio bearer 602. Optionally, UE 110 may execute transceiver
1102 to transmit the one or more compressed prioritized data packets 162 and the one
or more compressed unprioritized data packet 164 for transmission on the first radio
bearer 602 based on a determination not to establish the second radio bearer 604 for
the transmission of the one or more prioritized data packets 154.
[0094] In an aspect, method 1000 may further include determining whether a prioritization
parameter disabling prioritization satisfies a threshold, and disabling prioritization
of the one or more data packets based a determination that the prioritization parameter
satisfies the threshold. For example, the prioritization parameter corresponds to
an amount of time that prioritization has occurred, and the threshold corresponds
to a maximum period of time configured for prioritization. In another example, the
prioritization parameter corresponds to a number of remaining uncompressed data packets
of the plurality of data packets 152, and the threshold corresponds to a minimum number
of remaining data packets configured for prioritization.
[0095] Referring to
FIG. 11, one example of an implementation of an UE 110 may include a variety of components,
some of which have already been described above, but including components such as
one or more processors 1112 and memory 1116 and transceiver 1102 in communication
via one or more buses 1144, which may operate in conjunction with modem 140 and call
processing component 142 to prioritize data packets when stateful compression is enabled
for wireless communications. Further, the one or more processors 1112, modem 1114,
memory 1116, transceiver 1102, radio frequency (RF) front end 1188 and one or more
antennas 1165, may be configured to support voice and/or data calls (simultaneously
or non-simultaneously) in one or more radio access technologies. In some aspects,
the modem 140 may be the same as or similar to the modem 140 (FIG. 1).
[0096] In an aspect, the one or more processors 1112 can include a modem 140 that uses one
or more modem processors. The various functions related to call processing component
142 may be included in modem 140 and/or processors 1 1 12 and, in an aspect, can be
executed by a single processor, while in other aspects, different ones of the functions
may be executed by a combination of two or more different processors. For example,
in an aspect, the one or more processors 1112 may include any one or any combination
of a modem processor, or a baseband processor, or a digital signal processor, or a
transmit processor, or a receiver processor, or a transceiver processor associated
with the transceiver 1102. In other aspects, some of the features of the one or more
processors 1112 and/or modem 140 associated with prioritization component 150 may
be performed by transceiver 1102.
[0097] Also, memory 1116 may be configured to store data used herein and/or local versions
of applications 1175 or prioritization component 150 and/or one or more of its subcomponents
being executed by at least one processor 1112. Memory 1116 can include any type of
computer-readable medium usable by a computer or at least one processor 1112, such
as random access memory (RAM), read only memory (ROM), tapes, magnetic discs, optical
discs, volatile memory, non-volatile memory, and any combination thereof. In an aspect,
for example, memory 1116 may be a non-transitory computer-readable storage medium
that stores one or more computer-executable codes defining call processing component
142 and/or one or more of its subcomponents, and/or data associated therewith, when
UE 110 is operating at least one processor 1112 to execute call processing component
142 and/or one or more of its subcomponents.
[0098] The transceiver 1102 may include at least one receiver 1106 and at least one transmitter
1108. The receiver 1106 may include hardware, firmware, and/or software code executable
by a processor for receiving data, the code comprising instructions and being stored
in a memory (e.g., computer-readable medium). The receiver 1106 may be, for example,
a RF receiver. In an aspect, the receiver 1106 may receive signals transmitted by
at least one base station 105. Additionally, the receiver 1106 may process such received
signals, and also may obtain measurements of the signals, such as, but not limited
to, Ec/Io, SNR, RSRP, RSSI, etc. The transmitter 1108 may include hardware, firmware,
and/or software code executable by a processor for transmitting data, the code comprising
instructions and being stored in a memory (e.g., computer-readable medium). A suitable
example of the transmitter 1108 may include , but is not limited to, an RF transmitter.
[0099] Moreover, in an aspect, the UE 110 may include an RF front end 1188, which may operate
in communication with one or more antennas 1165 and transceiver 1102 for receiving
and transmitting radio transmissions, for example, wireless communications transmitted
by at least one base station 105 or wireless transmissions transmitted by the UE 110.
The RF front end 1188 may be communicatively coupled with the one or more antennas
1165 and can include one or more low-noise amplifiers (LNAs) 1190, one or more switches
1192, one or more power amplifiers (PAs) 1198, and one or more filters 1196 for transmitting
and receiving RF signals.
[0100] In an aspect, the LNA 1190 can amplify a received signal at a desired output level.
In an aspect, each LNA 1190 may have a specified minimum and maximum gain values.
In an aspect, RF front end 1188 may use one or more switches 1192 to select a particular
LNA 1190 and its specified gain value based on a desired gain value for a particular
application.
[0101] Further, for example, one or more PA(s) 1198 may be used by the RF front end 1188
to amplify a signal for an RF output at a desired output power level. In an aspect,
each PA 1198 may have specified minimum and maximum gain values. In an aspect, the
RF front end 1188 may use one or more switches 1192 to select a particular PA 1198
and a corresponding specified gain value based on a desired gain value for a particular
application.
[0102] Also, for example, one or more filters 1196 can be used by the RF front end 1188
to filter a received signal to obtain an input RF signal. Similarly, in an aspect,
for example, a respective filter 1196 can be used to filter an output from a respective
PA 1198 to produce an output signal for transmission. In an aspect, each filter 1196
can be connected to a specific LNA 1190 and/or PA 1198. In an aspect, the RF front
end 1188 can use one or more switches 1192 to select a transmit or receive path using
a specified filter 1196, LNA 1190, and/or PA 1198, based on a configuration as specified
by transceiver 1102 and/or processor 1112.
[0103] As such, the transceiver 1102 may be configured to transmit and receive wireless
signals through one or more antennas 1165 via RF front end 1188. In an aspect, the
transceiver 1102 may be tuned to operate at specified frequencies such that the UE
110 can communicate with, for example, one or more base stations 105 or one or more
cells associated with one or more base stations 105. In an aspect, for example, the
modem 140 can configure the transceiver 1102 to operate at a specified frequency and
power level based on the UE configuration of the UE 110 and the communication protocol
used by the modem 140.
[0104] In an aspect, modem 140 can be a multiband-multimode modem, which can process digital
data and communicate with the transceiver 1102 such that the digital data is sent
and received using the transceiver 1102. In an aspect, the modem 140 can be multiband
and be configured to support multiple frequency bands for a specific communications
protocol. In an aspect, the modem 140 can be multimode and be configured to support
multiple operating networks and communications protocols. In an aspect, the modem
140 can control one or more components of the UE 110 (e.g., RF front end 1188, transceiver
1102) to enable transmission and/or reception of signals from the network based on
a specified modem configuration. In an aspect, the modem configuration can be based
on the mode of the modem and the frequency band in use. In another aspect, the modem
configuration can be based on UE configuration information associated with the UE
110 as provided by the network during cell selection and/or cell reselection.
[0105] Referring to
FIG. 12, one example of an implementation of base station 105 may include a variety of components,
some of which have already been described above, but including components such as
one or more processors 1212, a memory 1216, and a transceiver 1202 in communication
via one or more buses 1244, which may operate in conjunction with modem 200 and call
processing component 202 configured to prioritize data packets when stateful compression
is enabled for wireless communications.
[0106] The transceiver 1202, receiver 1206, transmitter 1208, one or more processors 1212,
memory 1216, applications 1275, buses 1244, RF front end 1288, LNAs 1290, switches
1292, filters 1296, PAs 1298, and one or more antennas 1265 may be the same as or
similar to the corresponding components of UE 110, as described above, but configured
or otherwise programmed for base station operations as opposed to UE operations.
[0107] The above detailed description set forth above in connection with the appended drawings
describes examples and does not represent the only examples that may be implemented
or that are within the scope of the claims. The term "example," when used in this
description, means "serving as an example, instance, or illustration," and not "preferred"
or "advantageous over other examples." The detailed description includes specific
details for the purpose of providing an understanding of the described techniques.
These techniques, however, may be practiced without these specific details. In some
instances, well-known structures and apparatuses are shown in block diagram form in
order to avoid obscuring the concepts of the described examples.
[0108] Information and signals may be represented using any of a variety of different technologies
and techniques. For example, data, instructions, commands, information, signals, bits,
symbols, and chips that may be referenced throughout the above description may be
represented by voltages, currents, electromagnetic waves, magnetic fields or particles,
optical fields or particles, computer-executable code or instructions stored on a
computer-readable medium, or any combination thereof.
[0109] The various illustrative blocks and components described in connection with the disclosure
herein may be implemented or performed with a specially-programmed device, such as
but not limited to a processor, a digital signal processor (DSP), an ASIC, a FPGA
or other programmable logic device, a discrete gate or transistor logic, a discrete
hardware component, or any combination thereof designed to perform the functions described
herein. A specially-programmed processor may be a microprocessor, but in the alternative,
the processor may be any conventional processor, controller, microcontroller, or state
machine. A specially-programmed processor may also be implemented as a combination
of computing devices, e.g., a combination of a DSP and a microprocessor, multiple
microprocessors, one or more microprocessors in conjunction with a DSP core, or any
other such configuration.
[0110] The functions described herein may be implemented in hardware, software executed
by a processor, firmware, or any combination thereof. If implemented in software executed
by a processor, the functions may be stored on or transmitted over as one or more
instructions or code on a non-transitory computer-readable medium. Other examples
and implementations are within the scope of the invention insofar within the scope
of the appended claims. For example, due to the nature of software, functions described
above can be implemented using software executed by a specially programmed processor,
hardware, firmware, hardwiring, or combinations of any of these. Features implementing
functions may also be physically located at various positions, including being distributed
such that portions of functions are implemented at different physical locations. Also,
as used herein, including in the claims, "or" as used in a list of items prefaced
by "at least one of" indicates a disjunctive list such that, for example, a list of
"at least one of A, 13, or C" means A or B or C or AB or AC or BC or ABC (i.e., A
and B and C).
[0111] Computer-readable media includes both computer storage media and communication media
including any medium that facilitates transfer of a computer program from one place
to another. A storage medium may be any available medium that can be accessed by a
general purpose or special purpose computer. By way of example, and not limitation,
computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk
storage, magnetic disk storage or other magnetic storage devices, or any other medium
that can be used to carry or store desired program code means in the form of instructions
or data structures and that can be accessed by a general-purpose or special-purpose
computer, or a general-purpose or special-purpose processor. Also, any connection
is properly termed a computer-readable medium. For example, if the software is transmitted
from a website, server, or other remote source using a coaxial cable, fiber optic
cable, twisted pair, digital subscriber line (DSL), or wireless technologies such
as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted
pair, DSL, or wireless technologies such as infrared, radio, and microwave are included
in the definition of medium. Disk and disc, as used herein, include compact disc (CD),
laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc
where disks usually reproduce data magnetically, while discs reproduce data optically
with lasers. Combinations of the above are also included within the scope of computer-readable
media.
[0112] The previous description of the disclosure is provided to enable a person skilled
in the art to make or use the disclosure. Various modifications to the disclosure
will be readily apparent to those skilled in the art, and the common principles defined
herein may be applied to other variations without departing from the scope of the
disclosure. Furthermore, although elements of the described aspects and/or embodiments
may be described or claimed in the singular, the plural is contemplated unless limitation
to the singular is explicitly stated.